Hand-held power injector



FIG. 1 is a perspective view of a hand-held power injector incorporating the design;

FIG. 2 is a side elevational view of the design of FIG. 1, the left side and the right side elevation having the same appearance;

FIG. 3 is a front plan view of the design of FIG. 1;

FIG. 4 is a rear plan view of the design of FIG. 1;

FIG. 5 is a top plan view of the design of FIG. 1; and,

FIG. 6 is a bottom plan view of the design of FIG. 1. 

The ornamental design for a hand-held power injector, as shown and described. 